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Piaget, J. (1954). The Construction of Reality in the Child. New York: Basic Books.
The school age is marked by significant cognitive advancements, as children enter the stage of concrete operational thinking, as described by Piaget (1954). During this period, children develop more logical and systematic thinking, enabling them to solve problems and understand cause-and-effect relationships. Hurlock highlights the importance of socialization and peer relationships during this stage, as children begin to form close friendships and develop a sense of belonging.
Hurlock, E. B. (1980). Developmental Psychology. 5th ed. New York: McGraw-Hill.